Make it so in the notebook the upgrade command is very non-verbose.
In order to make this happen, we'll need to have an option to
"sage -i" that makes sage-spkg much less verbose, i.e., just display
each package is being built, and whether the install failed or
succeeded.
Also, upgrade() run in the notebook should autodect that it should
run non-verbosely by checking whether it is run in embedded mode (the
same as is done in plotting).
This is a defect, because right now if one types upgrade() into the notebook, because of verbosity of the output it can take 20 HOURS to upgrade, as reported by Jim Morrow.
CC: @williamstein
Component: packages: standard
Issue created by migration from https://trac.sagemath.org/ticket/2174